375 lines
13 KiB
C++
375 lines
13 KiB
C++
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/*
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* Copyright 2004 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/base/fileutils.h"
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#include "webrtc/base/gunit.h"
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#include "webrtc/base/pathutils.h"
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#include "webrtc/base/stream.h"
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namespace rtc {
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///////////////////////////////////////////////////////////////////////////////
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// TestStream
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///////////////////////////////////////////////////////////////////////////////
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class TestStream : public StreamInterface {
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public:
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TestStream() : pos_(0) { }
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virtual StreamState GetState() const { return SS_OPEN; }
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virtual StreamResult Read(void* buffer, size_t buffer_len,
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size_t* read, int* error) {
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unsigned char* uc_buffer = static_cast<unsigned char*>(buffer);
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for (size_t i = 0; i < buffer_len; ++i) {
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uc_buffer[i] = static_cast<unsigned char>(pos_++);
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}
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if (read)
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*read = buffer_len;
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return SR_SUCCESS;
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}
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virtual StreamResult Write(const void* data, size_t data_len,
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size_t* written, int* error) {
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if (error)
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*error = -1;
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return SR_ERROR;
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}
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virtual void Close() { }
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virtual bool SetPosition(size_t position) {
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pos_ = position;
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return true;
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}
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virtual bool GetPosition(size_t* position) const {
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if (position) *position = pos_;
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return true;
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}
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virtual bool GetSize(size_t* size) const {
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return false;
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}
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virtual bool GetAvailable(size_t* size) const {
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return false;
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}
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private:
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size_t pos_;
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};
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bool VerifyTestBuffer(unsigned char* buffer, size_t len,
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unsigned char value) {
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bool passed = true;
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for (size_t i = 0; i < len; ++i) {
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if (buffer[i] != value++) {
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passed = false;
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break;
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}
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}
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// Ensure that we don't pass again without re-writing
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memset(buffer, 0, len);
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return passed;
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}
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void SeekTest(StreamInterface* stream, const unsigned char value) {
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size_t bytes;
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unsigned char buffer[13] = { 0 };
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const size_t kBufSize = sizeof(buffer);
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EXPECT_EQ(stream->Read(buffer, kBufSize, &bytes, NULL), SR_SUCCESS);
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EXPECT_EQ(bytes, kBufSize);
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EXPECT_TRUE(VerifyTestBuffer(buffer, kBufSize, value));
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EXPECT_TRUE(stream->GetPosition(&bytes));
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EXPECT_EQ(13U, bytes);
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EXPECT_TRUE(stream->SetPosition(7));
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EXPECT_EQ(stream->Read(buffer, kBufSize, &bytes, NULL), SR_SUCCESS);
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EXPECT_EQ(bytes, kBufSize);
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EXPECT_TRUE(VerifyTestBuffer(buffer, kBufSize, value + 7));
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EXPECT_TRUE(stream->GetPosition(&bytes));
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EXPECT_EQ(20U, bytes);
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}
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TEST(FifoBufferTest, TestAll) {
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const size_t kSize = 16;
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const char in[kSize * 2 + 1] = "0123456789ABCDEFGHIJKLMNOPQRSTUV";
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char out[kSize * 2];
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void* p;
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const void* q;
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size_t bytes;
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FifoBuffer buf(kSize);
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StreamInterface* stream = &buf;
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// Test assumptions about base state
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EXPECT_EQ(SS_OPEN, stream->GetState());
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EXPECT_EQ(SR_BLOCK, stream->Read(out, kSize, &bytes, NULL));
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EXPECT_TRUE(NULL != stream->GetReadData(&bytes));
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EXPECT_EQ((size_t)0, bytes);
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stream->ConsumeReadData(0);
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EXPECT_TRUE(NULL != stream->GetWriteBuffer(&bytes));
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EXPECT_EQ(kSize, bytes);
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stream->ConsumeWriteBuffer(0);
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// Try a full write
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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// Try a write that should block
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EXPECT_EQ(SR_BLOCK, stream->Write(in, kSize, &bytes, NULL));
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// Try a full read
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize));
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// Try a read that should block
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EXPECT_EQ(SR_BLOCK, stream->Read(out, kSize, &bytes, NULL));
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// Try a too-big write
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize * 2, &bytes, NULL));
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EXPECT_EQ(bytes, kSize);
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// Try a too-big read
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize * 2, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize));
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// Try some small writes and reads
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize / 2));
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize / 2));
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize / 2));
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// Try wraparound reads and writes in the following pattern
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// WWWWWWWWWWWW.... 0123456789AB....
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// RRRRRRRRXXXX.... ........89AB....
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// WWWW....XXXXWWWW 4567....89AB0123
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// XXXX....RRRRXXXX 4567........0123
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// XXXXWWWWWWWWXXXX 4567012345670123
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// RRRRXXXXXXXXRRRR ....01234567....
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// ....RRRRRRRR.... ................
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize * 3 / 4, &bytes, NULL));
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EXPECT_EQ(kSize * 3 / 4, bytes);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize / 2));
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 4, &bytes, NULL));
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EXPECT_EQ(kSize / 4 , bytes);
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EXPECT_EQ(0, memcmp(in + kSize / 2, out, kSize / 4));
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2 , bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize / 2));
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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EXPECT_EQ(kSize / 2 , bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize / 2));
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// Use GetWriteBuffer to reset the read_position for the next tests
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stream->GetWriteBuffer(&bytes);
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stream->ConsumeWriteBuffer(0);
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// Try using GetReadData to do a full read
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize, &bytes, NULL));
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q = stream->GetReadData(&bytes);
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EXPECT_TRUE(NULL != q);
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(0, memcmp(q, in, kSize));
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stream->ConsumeReadData(kSize);
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EXPECT_EQ(SR_BLOCK, stream->Read(out, kSize, &bytes, NULL));
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// Try using GetReadData to do some small reads
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize, &bytes, NULL));
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q = stream->GetReadData(&bytes);
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EXPECT_TRUE(NULL != q);
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(0, memcmp(q, in, kSize / 2));
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stream->ConsumeReadData(kSize / 2);
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q = stream->GetReadData(&bytes);
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EXPECT_TRUE(NULL != q);
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(0, memcmp(q, in + kSize / 2, kSize / 2));
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stream->ConsumeReadData(kSize / 2);
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EXPECT_EQ(SR_BLOCK, stream->Read(out, kSize, &bytes, NULL));
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// Try using GetReadData in a wraparound case
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// WWWWWWWWWWWWWWWW 0123456789ABCDEF
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// RRRRRRRRRRRRXXXX ............CDEF
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// WWWWWWWW....XXXX 01234567....CDEF
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// ............RRRR 01234567........
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// RRRRRRRR........ ................
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize, &bytes, NULL));
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize * 3 / 4, &bytes, NULL));
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize / 2, &bytes, NULL));
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q = stream->GetReadData(&bytes);
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EXPECT_TRUE(NULL != q);
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EXPECT_EQ(kSize / 4, bytes);
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EXPECT_EQ(0, memcmp(q, in + kSize * 3 / 4, kSize / 4));
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stream->ConsumeReadData(kSize / 4);
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q = stream->GetReadData(&bytes);
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EXPECT_TRUE(NULL != q);
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EXPECT_EQ(kSize / 2, bytes);
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EXPECT_EQ(0, memcmp(q, in, kSize / 2));
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stream->ConsumeReadData(kSize / 2);
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// Use GetWriteBuffer to reset the read_position for the next tests
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stream->GetWriteBuffer(&bytes);
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stream->ConsumeWriteBuffer(0);
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// Try using GetWriteBuffer to do a full write
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p = stream->GetWriteBuffer(&bytes);
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EXPECT_TRUE(NULL != p);
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EXPECT_EQ(kSize, bytes);
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memcpy(p, in, kSize);
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stream->ConsumeWriteBuffer(kSize);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize));
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// Try using GetWriteBuffer to do some small writes
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p = stream->GetWriteBuffer(&bytes);
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EXPECT_TRUE(NULL != p);
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EXPECT_EQ(kSize, bytes);
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memcpy(p, in, kSize / 2);
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stream->ConsumeWriteBuffer(kSize / 2);
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p = stream->GetWriteBuffer(&bytes);
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EXPECT_TRUE(NULL != p);
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EXPECT_EQ(kSize / 2, bytes);
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memcpy(p, in + kSize / 2, kSize / 2);
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stream->ConsumeWriteBuffer(kSize / 2);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize));
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// Try using GetWriteBuffer in a wraparound case
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// WWWWWWWWWWWW.... 0123456789AB....
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// RRRRRRRRXXXX.... ........89AB....
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// ........XXXXWWWW ........89AB0123
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// WWWW....XXXXXXXX 4567....89AB0123
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// RRRR....RRRRRRRR ................
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize * 3 / 4, &bytes, NULL));
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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p = stream->GetWriteBuffer(&bytes);
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EXPECT_TRUE(NULL != p);
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EXPECT_EQ(kSize / 4, bytes);
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memcpy(p, in, kSize / 4);
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stream->ConsumeWriteBuffer(kSize / 4);
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p = stream->GetWriteBuffer(&bytes);
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EXPECT_TRUE(NULL != p);
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EXPECT_EQ(kSize / 2, bytes);
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memcpy(p, in + kSize / 4, kSize / 4);
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stream->ConsumeWriteBuffer(kSize / 4);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize * 3 / 4, &bytes, NULL));
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EXPECT_EQ(kSize * 3 / 4, bytes);
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EXPECT_EQ(0, memcmp(in + kSize / 2, out, kSize / 4));
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EXPECT_EQ(0, memcmp(in, out + kSize / 4, kSize / 4));
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// Check that the stream is now empty
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EXPECT_EQ(SR_BLOCK, stream->Read(out, kSize, &bytes, NULL));
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// Try growing the buffer
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_TRUE(buf.SetCapacity(kSize * 2));
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EXPECT_EQ(SR_SUCCESS, stream->Write(in + kSize, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize * 2, &bytes, NULL));
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EXPECT_EQ(kSize * 2, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize * 2));
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// Try shrinking the buffer
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_TRUE(buf.SetCapacity(kSize));
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EXPECT_EQ(SR_BLOCK, stream->Write(in, kSize, &bytes, NULL));
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize, &bytes, NULL));
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EXPECT_EQ(kSize, bytes);
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EXPECT_EQ(0, memcmp(in, out, kSize));
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// Write to the stream, close it, read the remaining bytes
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EXPECT_EQ(SR_SUCCESS, stream->Write(in, kSize / 2, &bytes, NULL));
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stream->Close();
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EXPECT_EQ(SS_CLOSED, stream->GetState());
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EXPECT_EQ(SR_EOS, stream->Write(in, kSize / 2, &bytes, NULL));
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EXPECT_EQ(SR_SUCCESS, stream->Read(out, kSize / 2, &bytes, NULL));
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EXPECT_EQ(0, memcmp(in, out, kSize / 2));
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EXPECT_EQ(SR_EOS, stream->Read(out, kSize / 2, &bytes, NULL));
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}
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TEST(FifoBufferTest, FullBufferCheck) {
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FifoBuffer buff(10);
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buff.ConsumeWriteBuffer(10);
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size_t free;
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EXPECT_TRUE(buff.GetWriteBuffer(&free) != NULL);
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EXPECT_EQ(0U, free);
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}
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TEST(FifoBufferTest, WriteOffsetAndReadOffset) {
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const size_t kSize = 16;
|
||
|
|
const char in[kSize * 2 + 1] = "0123456789ABCDEFGHIJKLMNOPQRSTUV";
|
||
|
|
char out[kSize * 2];
|
||
|
|
FifoBuffer buf(kSize);
|
||
|
|
|
||
|
|
// Write 14 bytes.
|
||
|
|
EXPECT_EQ(SR_SUCCESS, buf.Write(in, 14, NULL, NULL));
|
||
|
|
|
||
|
|
// Make sure data is in |buf|.
|
||
|
|
size_t buffered;
|
||
|
|
EXPECT_TRUE(buf.GetBuffered(&buffered));
|
||
|
|
EXPECT_EQ(14u, buffered);
|
||
|
|
|
||
|
|
// Read 10 bytes.
|
||
|
|
buf.ConsumeReadData(10);
|
||
|
|
|
||
|
|
// There should be now 12 bytes of available space.
|
||
|
|
size_t remaining;
|
||
|
|
EXPECT_TRUE(buf.GetWriteRemaining(&remaining));
|
||
|
|
EXPECT_EQ(12u, remaining);
|
||
|
|
|
||
|
|
// Write at offset 12, this should fail.
|
||
|
|
EXPECT_EQ(SR_BLOCK, buf.WriteOffset(in, 10, 12, NULL));
|
||
|
|
|
||
|
|
// Write 8 bytes at offset 4, this wraps around the buffer.
|
||
|
|
EXPECT_EQ(SR_SUCCESS, buf.WriteOffset(in, 8, 4, NULL));
|
||
|
|
|
||
|
|
// Number of available space remains the same until we call
|
||
|
|
// ConsumeWriteBuffer().
|
||
|
|
EXPECT_TRUE(buf.GetWriteRemaining(&remaining));
|
||
|
|
EXPECT_EQ(12u, remaining);
|
||
|
|
buf.ConsumeWriteBuffer(12);
|
||
|
|
|
||
|
|
// There's 4 bytes bypassed and 4 bytes no read so skip them and verify the
|
||
|
|
// 8 bytes written.
|
||
|
|
size_t read;
|
||
|
|
EXPECT_EQ(SR_SUCCESS, buf.ReadOffset(out, 8, 8, &read));
|
||
|
|
EXPECT_EQ(8u, read);
|
||
|
|
EXPECT_EQ(0, memcmp(out, in, 8));
|
||
|
|
|
||
|
|
// There should still be 16 bytes available for reading.
|
||
|
|
EXPECT_TRUE(buf.GetBuffered(&buffered));
|
||
|
|
EXPECT_EQ(16u, buffered);
|
||
|
|
|
||
|
|
// Read at offset 16, this should fail since we don't have that much data.
|
||
|
|
EXPECT_EQ(SR_BLOCK, buf.ReadOffset(out, 10, 16, NULL));
|
||
|
|
}
|
||
|
|
|
||
|
|
} // namespace rtc
|